Leonard Leo, a leader of the right-wing Federalist Society, hopes to transform American culture the way he transformed the judiciary. As Donald Trump’s adviser on judicial nominations, he helped put Neil Gorsuch, Brett Kavanaugh and Amy Coney Barrett on the Supreme Court, making him central to the demise of Roe v. Wade. Now he wants to build a new organization helping reactionaries consolidate power in realms like Wall Street, Silicon Valley, journalism, Hollywood and academia. “I spent close to 30 years, if not more, helping to build the conservative legal movement,” Leo said in a video for the organization at...